Aug. 15, 2016 12:43 PM PT1:43 PM MT2:43 PM CT3:43 PM ET19:43 GMT3:43 AM 北京时间12:43 PM MST2:43 PM EST2:43 PM CT23:43 UAE15:43 ET18:43 - The Bills signed Biermann on Monday after IK Enemkpali tore his right ACL in Saturday night's preseason opener.Analysis: Biermann's deal is for one year, a source told ESPN's Adam Schefter. Enemkpali was waived/injured to make room for Biermann. The 30-year-old Biermann, who worked out Monday morning and signed a contract in the afternoon, has played his entire career for the Atlanta Falcons, who made him a fifth-round pick in the 2008 draft. The 6-foot-3, 255-pound Biermann has played in 114 career games (37 starts) and has totaled 333 tackles, 23.5 sacks and two interceptions.